English

Duality pairs and stable module categories

Commutative Algebra 2017-10-30 v1

Abstract

Let RR be a commutative ring. We show that any complete duality pair gives rise to a theory of relative homological algebra, analogous to Gorenstein homological algebra. Indeed Gorenstein homological algebra over a commutative Noetherian ring of finite Krull dimension can be recovered from the duality pair (F,I)(\mathcal{F},\mathcal{I}) where F\mathcal{F} is the class of flat RR-modules and I\mathcal{I} is the class of injective RR-modules. For a general RR, the AC-Gorenstein homological algebra of Bravo-Gillespie-Hovey is the one coming from the duality pair (L,A)(\mathcal{L},\mathcal{A}) where L\mathcal{L} is the class of level RR-modules and A\mathcal{A} is class of absolutely clean RR-modules. Indeed we show here that the work of Bravo-Gillespie-Hovey can be extended to obtain similar abelian model structures on RR-Mod from any a complete duality pair (L,A)(\mathcal{L},\mathcal{A}). It applies in particular to the original duality pairs constructed by Holm-J{\o} rgensen.

Keywords

Cite

@article{arxiv.1710.09906,
  title  = {Duality pairs and stable module categories},
  author = {James Gillespie},
  journal= {arXiv preprint arXiv:1710.09906},
  year   = {2017}
}
R2 v1 2026-06-22T22:27:05.402Z